Three hole with deep dish mount mostly found on GY6 150 but many two stroke have same front end so just compare yours or parts manual for parts number or call 301 576 1874 and ask me I will know
Front disc brake rotor for QJ made two or four stroke scooters from Yamati, Keeway, Strada, TNG and many others. Its the size of disc and mounting holes that matters, if your stock rotor is 180mm across this is it and will work on stock caliper plus three mounting screws.
Will fit many scooters lets us know in comments at check out what scooter you have so we can check it out for you.